NE555 integrated timer circuit (Single Timer) can be accurate to the time delay or oscillation, in the time delay mode of operation, the time by an independent external resistor and capacitor control, in non-steady-state mode of operation, the frequency and cycle can be composed of two external resistors and independent control of an external capacitor. 

 Chip basic parameters: 

 Chip Type 

 Model 
 Similar models 
 Chip area 

 (Mm) 
 Wafer size 

 (Inches) 

 NE555 
 LM555 
 1.02 * 1.07 

 1.20 * 1.30 

 0.87 * 0.75 
 4 " 


 Package finished tube 

 Chip Type 
 Package shape 
 Package Type 

 NE555 
 DIP-8, SOP-8 
 Plastic